The presence of chemicals exuded by fish affects the life-history response of <i>Ceriodaphnia</i> cf. <i>dubia</i> to chemicals with different mechanisms of action

DOI PDF Web Site 1 Citations
  • Rebecca M. Rose
    Environmental Protection Authority/University of Technology, Sydney, Centre for Ecotoxicology, Westbourne Street, Gore Hill, New South Wales 2065, Australia
  • Michael St. J Warne
    Environmental Protection Authority/University of Technology, Sydney, Centre for Ecotoxicology, Westbourne Street, Gore Hill, New South Wales 2065, Australia
  • Richard P Lim
    Environmental Protection Authority/University of Technology, Sydney, Centre for Ecotoxicology, Westbourne Street, Gore Hill, New South Wales 2065, Australia

Search this article

Description

<jats:title>Abstract</jats:title> <jats:p>The toxicity of chemicals with different mechanisms of action (3,4-dichloroaniline, fenoxycarb, and chlorpyrifos) to the cladoceran Ceriodaphnia cf. dubia was examined in the presence and absence of chemicals exuded by fish, termed fish kairomones. A range of life-history traits were examined, including mean brood sizes, survival, net reproductive rate (Ro) and population growth rate (r). Cladocerans exposed to 3,4-dichloroaniline showed similar sensitivities in the presence and absence of fish kairomones with respect to all of the life-history traits examined. The presence of fish kairomones reduced the sensitivity of cladocerans to fenoxycarb with respect to mean brood sizes and r but increased their sensitivity in terms of Ro. The presence of fish kairomones increased the sensitivity of cladocerans to chlorpyrifos with respect to survival, r, Ro, and mean brood sizes. The general trends observed were similar to those shown when C. cf. dubia was exposed to these chemicals under low food conditions, and it is suggested that the effects of fish kairomones on toxicity may be attributed to the reduction in feeding rates observed when C. cf. dubia is exposed to fish kairomones.</jats:p>

Journal

Citations (1)*help

See more

Report a problem

Back to top